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June 22 19.26 1,589,909

H. Tsmwmmm@ STOVE DAMPER Filed April 5, 3.926

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Patented June 22, 1926.

fUNl'ltll) STATES PAT-ENT OFFICE.

HENRY TSCHERITING, OF FREEPORT, ILLINOIS, .ASSSIGplQoR T ARCADE lIll/LANUFA@lll'[J'l/ 1131- C0., IGF FREEPO-RT, ILLINOIS, A YCORPORA'JJJION `0F ILLINOIS.

vS'IEOIVE DAMPER.

Application vfiled April 5, '1926. 'Serial No. 99,824.

the damper into inter-locked position relative 'om either side -ot the damper.

to :the accompanying d-ra-wthereto,

ings#- tlaure l is 'plan View o1l n'iy improved daz device showing it as installed in a pipeshown in cross s yction..l lFigure 2 is a sectional View taken r ythe line 2-e2 on Fig. 'l ar il viewed inthe direction ot the arrow.

E is a diainetrical section oi the the section being` taken at a line pending 'with the line 2 on Fig. 1. Afflis a section talicn at the line L1-4 l and viewed in the direction ot' the ariow; and Figure 5, a detail View ot' the damper,

The derive, according to the preferred ilated einhodin'ient oi? niy invention, conia circular dainper provided at dialnet -lly oppo 'te sides ot its riin portion h oppositely extending, curved, strap--portions 11 p'esenting channels 12 in the plane ol 'the damper with grooves 13 eX- tcndiuf; lengthwiz'ee ot' tl ce channels. The upei', inwardly ot the raps 11, contains aperta .eilinto which pa of lugs 15 haviii@ s rtaces 1G which incline toward the periphery ot the damper in a direction away troni the adjacent straps 11, entend, the lugs 15 at opposite sides oit the center of the dainper, being` spaced apart, as shown, and iorining constrictions 17 ot the apertures 141-. The apertures 14; are shown as opening into a central aperture 18 in the damper 10, such as is coininonly provided in dainpers to prevent the pipe equipped with the dainper troni being entirely closed when the damper is in closed position, and bridging the apertures 111, between the lugs 15 and the aperture 18, are oppositely extending strap-poi1- tions 19 presenting groves 20 flanked by substantially tlat bearing-surfaces 21 slightly Aoffset from the airis ot the damper at the side the-reel opposite that at 4which Lthe adjacent lpair for Elugs '21, fextend.

The device also comprises a spindle 22 provided at one end 'with a handle portion 23, "with its opposite rend preferably pointed, as iep-resented at 21, the spindle being provided between its ends with dia-inetfri'cal-ly Aopposed laterally extending projections 25 `'which .may be orined iby stamping thein rioni the body oi' the spindle, the spindle al so being provided with an annular `ila-nge 26 rigid therewith at its liandle-equipped end.

'The parts ot the damper device are assenibled infto operative relation to each other and to a pipe, as by introducing the Kdfatnrper '10 into the 'pill e to be equipped therewith, as ior uiipl that represented at l.27, `lto yeste se 'ci' the pipe. lThe spindle fl eros:

22 with a -cl 1-1 spring `29 Vand a wash-er 30 threaded thereon to fthe position shown in the drawings, is then driven at its pointed end, through a side of the pipe adjacent the damper 10 and passed through the diainetrlcally disposed opening in the damper and driven through the opposite side oi' the pipe, the openings thereby produced in the pipe being` represented at 2S. It desired, the holes 28 may be preliininarily formed in the pipe in any suitable way. In asseinbling the spindle with the daniper, the spindle is rotated to a position in which one of the projections 25 registers with the groove 13 in the adjacent strap member 11, and is then pressed inwardly, against the resistance of the spring 29, to a position in which the projections 25 extend radially inwardly beyond the adjacent bearing surfaces 21. The operator then rotates the spindle throughout approximately 90lo and releases his grasp thereon whereupon the spindle, under the action of the spring 29, is retracted into a position in which the projections 25 ride upon the adjacent cannning surfaces 16, and force the spindle against the strap portion 19, there by iirnily locking the spindle against rotation relative to the damper.

r)The parts of the damper and spindle are preferably so constructed and arranged as shown that in the riding of the projections 25 upon the surfaces 16, as stated, these projections Will flatwise engage the bearingsurfaces 21 of the straps 19, whereby the interlock between the spindle and the bladeportion is between the projections 25 and the surfaces 16 and 2l.

It will furthermore be understood from the foregoing description and the drawings, that the spindle may be inserted into operative position relative to the damper l0, from either of opposite side, or edge, portions of the damper, by reason of the duplication of the spindle-interlocking portions at opposite sides or edges of the damper as disclosed, this being of advantage inasmuch as it greatly facilitates the installation of the damper device in place.

lllhile I have illustrated and described a particular construction embodying my invention, I do not wish to be understood as intending to limit it thereto, as the same may be variously modified and altered without departing from the spirit of my inven tion.

What I claim as new, and desire to secure by Letters Patent, is:

l. In a damper device, the combination of a damper containing a substantially dianietrically disposed opening for receiving` a pivoting spindle, said spindle being provided with oppositely extending lateral pi'oject-ions and said damper being provided with inclined projection-engaging surfaces for engagement by said projections and inwardly of said surfaces with a surface against which the projection-equipped portion of said spindle is forced by engagement of said projections with said inclined surfaces.

2. In a damper device, the combination of a damper containing a substantially diametrically disposed opening for receiving a pivoting spindle, said spindle being provided witli oppositely-extending lateral projections and said damper being provided with a pair of spaced apart inclined projection-engaging surfaces and inwardly of said surfaces with a surface against which the projection-equipped portion of said spindle is forced by engagement of said projections with said inclined surfaces.

3. In a damper device, the combination of a damper containing a substantially diainetrically disposed opening for receiving a pivoting spindle, said spindle being provided with oppositely extending lateral projections and said damper being provided with a pair of spaced apart inclined projection-engaging surfaces and inwardly of said surfaces with a pair of spaced apart surfaces against which thel projections on said spindle are forced by engagement of said projections with said inclined surfaces.

HENRY TSCIIERNING. 

